-
最佳答案：预防为主,防消结合Combine prevention with elimination while focusing on the prevention.
-
最佳答案：1.keep fit2.improve one's immunity3.take precautions against coronary,respirator
-
最佳答案：Keep smiling or laughing about 20 mins everyday is a way to keep away from sickn
-
最佳答案：1.Save energy and resources effectively .2. Promote the concept of environmental
-
最佳答案：1.The depletion of the ozone layer is the cause of global warming.The direct eff
-
最佳答案：those who eat fast might be better off slowing down some,and limiting intake amo